Wednesday, February 24, 2016

Acer Aspire 8935G – Bios setup utility - Disassembling procedure - Disassembling Key board – Disassembling LCD – Laptop repair and service

Category: Laptop Repair and Service 

Contents of this article

  • Bios Setup utilities 
  • Disassembling the key board  
  • Disassembling the LCD Module 



Acer Aspire 8935G

BIOS Setup Utility
The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/ Output System).
To activate the BIOS Utility, press F2 during POST (when “Press <F2> to enter Setup” message is prompted on the bottom of screen).
Press F2 to enter setup. The default parameter of F12 Boot Menu is set to “disabled”. If you want to change boot device without entering BIOS Setup Utility, please set the parameter to “enabled”.
Press <F12> during POST to enter multi-boot menu. In this menu, user can change boot device without entering BIOS SETUP Utility.
Navigating the BIOS Utility
There are six menu options: Information, Main, Advanced, Security, Boot, and Exit.
Follow these instructions:
# To choose a menu, use the left and right arrow keys.
# To choose an item, use the up and down arrow keys.
# To change the value of a parameter, press F5 or F6.
# A plus sign (+) indicates the item has sub-items. Press Enter to expand this item.
# Press Esc while you are in any of the menu options to go to the Exit menu.
# In any menu, you can load default settings by pressing F9. You can also press F10 to save any changes made and exit the BIOS Setup Utility.
BIOS Flash Utilities
The BIOS flash memory update is required for the following conditions:
# New versions of system programs
# New features or options
# Restore a BIOS when it becomes corrupted.
Use the Phlash utility to update the system BIOS flash ROM.
NOTE: If you do not have a crisis recovery diskette at hand, then you should create a Crisis Recovery Diskette before you use the Phlash utility.
NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use the Phlash.
NOTE: Please use the AC adaptor power supply when you run the Phlash utility. If the battery pack does not contain enough power to finish BIOS flash, you may not boot the system because the BIOS is not completely loaded.
Fellow the steps below to run the Phlash.
1. Prepare a bootable diskette.
2. Copy the flash utilities to the bootable diskette.
3. Then boot the system from the bootable diskette. The flash utility has auto-execution function.
DISASSEMBLING 
Pre-disassembly Instructions
Before proceeding with the disassembly procedure, make sure that you do the following:
1. Turn off the power to the system and all peripherals.
2. Unplug the AC adapter and all power and signal cables from the system.
3. Place the system on a flat, stable surface.
4. Remove the battery pack.
Removing the Battery Pack
1. Turn the computer over.
2. Slide the battery lock to the unlocked position.
3. Slide and hold the battery release latch to the release position (1), then lift out the battery pack from the main
unit (2)

Removing the Express Dummy Card
1. Push the Express Dummy Card all the way in to eject it.
2. Pull the card out from the slot.

Removing the SD Dummy Card
1. Slide the SD Dummy Card out of the slot and remove it from the computer.
Removing the Lower Door
1. See “Removing the Battery Pack” on page 56.
2. Loosen the seven captive screws in the Lower Door.
3. Remove the Lower Door as shown.

Removing the Optical Drive Module
1. Remove the single screw securing the ODD Module.
2.Insert a suitable object in to the Lower Cover to push the ODD Module clear of the casing.
3. Pull the ODD Module out of the chassis.

4. Remove the two screws securing the ODD Bracket and remove the ODD bracket from the module.
NOTE: Remove the left side screw first during disassembly.

5. Insert a pin in the eject hole of the ODD to eject the ODD tray.
6. Press down on the locking catch to release the ODD cover and remove.

Removing the Primary Hard Disk Drive Module
1. Use the pull-tab to slide the Primary HDD in the indicated direction and disconnect the interface.
2. Lift the hard disk drive module out of the bay.
NOTE: To prevent damage to device, avoid pressing down on it or placing heavy objects on top of it.

Removing the Keyboard
1. Press the six securing clips inward to release the Keyboard from the Upper Cover.
2. Lift the centre of Keyboard up as shown.

IMPORTANT: Do not remove the Keyboard from the computer; the Keyboard FFCs are still connected.
3. Turn the Keyboard over and place it on the TouchPad area to expose the FFC cables.

4. Disconnect the Backlight cable by opening the FFC latch and removing the cable from the Mainboard.
5. Disconnect the Keyboard cable by opening the FFC latch and removing the cable from the Mainboard.
6. Remove the Keyboard from the Upper Cover.

Removing the Switch Cover
1. Removing the Battery Pack”
2. Turn the computer over. Remove the thirteen screws securing the Switch Cover to the Upper Cover.

IMPORTANT: Do not lift the Switch Cover away from the computer; the Power Board FFC is still connected.
3. Turn the computer over and open the LCD Panel. Lift the Switch Cover, rear edge first, as shown.

Removing the LCD Module
1.Removing the Switch Cover”
2. Turn the computer over and ensure that the Antenna cables are free from obstructions.
3. Pull the Antenna cables through the Upper Cover as shown. Ensure that the Antennas are completely free
from the cover.

4. Remove the Antenna from the cable channel all the way to the Hinge Well. Ensure that the cables are free from
all cable clips.
5. Grasp the pull tab and lift upward as shown to disconnect the LVDS cable.
6. Remove the LVDS cable from the cable channel all the way to the Hinge Well. Ensure that the cable is free
from all cable clips.
7. Disconnect the MIcrophone cable from the Mainboard

8. Remove the Microphone cable from the cable channel all the way to the Hinge Well. Ensure that the cable is
free from all cable clips.
9. Remove the four screws securing the LCD Module to the Lower Cover.

10. Using both hands, lift the LCD Module clear of the Lower Cover.